Dizziness is the feeling of being lightheaded, woozy, or unbalanced. It affects the sensory organs, specifically the eyes and ears, so it can sometimes cause fainting. Dizziness isn't a disease, but rather a symptom of various disorders.

The average person takes between 12 to 20 breaths per minute. Rapid, shallow breathing, also called tachypnea, occurs when you take more breaths than normal in a given minute. When a person breathes rapidly, it's sometimes known as hyperventilatio...

Sensations are carried from the extremities of the body to the brain via neurons in the spinal cord. If the blood supply to the nerves is decreased, it can produce the feeling that “my hand fell asleep”.